Improved tuyere



@Ninfa/MQ@ l 5mg? N. PETERS, PHOTO-LITMBGRAFHER. WASHINGTON D C diluted girate-,t

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Letters Patent N 91,882, dated June 29, 1869.

IMPROVE!) TU'YERE.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern;-

Be it known that I, PETER SWEENY, of the city, county, and State of New YorkLh-ave invented a new -and useful Improvement in Tuyeres; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this speciication, in which drawing Figure l represents my improved tuyere, partly in vertical section, the inner side of the foot-box being shown undivided.

Figure 2 is a transverse vertical section.

Similar letters indicate corresponding parts.

My invention relates to that class of' tuyeres in which the discharging-nozzle is arranged in the hearth itself', instead of'being arranged in the back of the forge.

The view given in tig. 1 is supposed to be taken from the opposite side of the hearth to that where the workman stands. The tuyere is represented as detached from a forge, and in practice it will be in great part covered by the hearth of the forge.

The letter A designates the inlet-air pipe, which will extend out through the back of the forge, and which enters the side ot the tube B, in which is formed an annular airfchamber, C, that surrounds the vertical discharge-pipe D, which will be hereinafter again referred to and described.

The fresh air from the inlet-pipe A passes through the annular chamber O and into a descending pipe, E, which is conducted downward and sideways to the hollow box F, which. is made and arranged so as to form a suitable stand for the feet ot? the workman, being made level, or nearly level with the door ot' the shop. This box has one or more partial partitions across it, soas to form a more or less circuitous path for the inlet air to traverse in going through it.

One of the sides of the box is provided with an inlet-valve, as is shown at G, in iig. l, the purpose of which will be hereafter described ;V or such valve may be placed in the pipes E, as shown in red outlines.

The air, after traversing the foot-box F, leaves it by the pipe H, at the opposite end ot' the box from the place ot' entrance, and is by that pipe discharged into -the vertical partV of a right-angled tube, I, whose vertical part `nts over the lower end of the tube B, while its horizontal part extends toward and ont ot' that side of the hearth where the workmans station is, its protruding end being closed by a removable cover, J, the object of making. the cover removable being tn allow the workman to clean out the tube l .of sand, dust, or other matters that may be collected in it. 'I

The interior of tube I is separated from the annular air-chamber in the tube B, by a valve-plate, K,

which has a central opening, from which rises a short tube, L, that connects with the discharge-pipe D, before referred to.

This valve-plate rests loosely on the circular ledge M, which is formed around the inside of the tube B, near its bottom, and can be removed with facility, after the discharging-pipe D is removed.

The said pipe D rises up to, or nearly up to the level of the bottom ot' the hearth, and goes through a convex cover, N, whose rim fits in a sand-packing arf ranged in or around the upper end of tube B, ras will be next described.'

Around the upper part of tube B, I form a horizontal flange, '0, on which rests the bottom of a ring, P, that is set over and around the top of' tube B, the ring being larger than the tube, so as to leave an annular space between itself and the tube, in which space I place sand-packing, as shown in the 'draw--V inf.

lllhe bottom of'the ring P has a horizontal inner 41lange,Q, which comes close to the exterior of the tube B, sovas to make a good joint, said flange Q resting on the flange O of the tube. Into this sandpacking the rim of the cover N is forced down, so as to prevent air from leaking ont of this part of the tuyere.

It will be observed, that by means of the construction and arrangement herein shown, I can readily remove, replace, and renew those parts of the tuyere which are most liable to be burned out, such, for example, as the cover N, the ring P, and pipe D.

The Atuyere, as above described, is arranged for winter-use, and in order toheat the air that is to be admitted tothe tire, it is accomplished by compelling the fresh air to pass through the chamber G, pipe E, foot-box F, and tubes H D, all of.which are placed in the body ofthe hearth and below the tire, so that the air'which passes through them will become warmed before it is' delivered into the tire, and will, by passing through the foot-box, also serve to warm it, thereby providing a warm standing-place for the workman.

'lhe constant presence of air in the pipe D, and in the annular chamber C, while the tuyere is in active operation, serves to preserve the upper exposed parts ofthe tuycre t'rom being burned out, and when it is not in active operation, the same result, that is to say, preserving the exposed parts, is obtained by means ot' the oritice R, in pipe D, which orifice admits a constant current ot' air from chamber G into the pipe D, the supply of air being kept up by means of the inlet-air valve Gr, when the bellows, or blast is idle.

When the tnyere is to be arranged for summer-use, I place a plug, S, in the upper end of the pipe E, and remove the valve-plate K, so as to allow the air from pipe A to go directly into the pipe D.

The plug S has a perforation in it, which allows a constant circulation of aV small current of air through it, in order to keep it cool.

The ring P encloses the top ofthe tube B in such a. manner as to protect 'and prevent said tube from being burned out by the 4lire of the forge, and I make said ring loose and removable, so that it can easily be renewed when it becomes burned out.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination and arrangement of the annumese 3. The arrangement of the tubes B D Land remov-` able diaphragmK, substantially as described.

A PETER SWEENY. Witnesses;

W. HAUFF, ERNEST F. KASTENHUBER. 

